Hair loss ans scalp itchi. Should i do.

In 2014 I got severe hair loss in July.firstly there was severe itching on middle back of my head.doctor consulted minoxidil and hair 4 u lotion.for 3 months.results were good.my lost hair were back.again in 2015 I suffered from the same problem.I took minoxidil for 1 month.my hair fall was controlled but I still had not regain my lost hair.I lost my hair mainly from middle back hair line of my head.my hair are very thin on that part.In 2013 I was suffered from skin fungal infection.I took medications for it till 2014 Feb.I don't know if there will b any connection.I had cyst in my ovary but now it is cleared but I have polycystic ovaries.is there any connection from these with my hair loss.I dont have any other medical issues.what should I do.plzz help